运用“问号递进法”提高企业班组长素质马长城科学的管理必然是成功的管理，成功的管理必然是朴素的管理。对于一个成功的企业基层管理而言，其理论和方法必须一要精、二要管用、三要通俗易懂。精，就是方法要少一些，且它们必须是经过筛选，并被实践证明是能产生实效的；... Using the “Questioning Letter Progressive Method” to Improve the Quality of the Leader of a Business Team The scientific management of the Great Wall of China must be a successful management. Successful management must be a simple management. For a successful enterprise at the grass-roots level, its theory and method must be precise, second-hand, and simple-minded. Fine, that is, fewer methods, and they must be screened and proved to be effective by practice;...